# aa = [{'name': '张三', 'age': 19}, {'name': '李四', 'age': 22}]
# for a in aa:
#     print(a)
#     print(a['name'])
# {'name': '张三', 'age': 19}
# # 张三
# # {'name': '李四', 'age': 22}
# # 李四

str = '123'
print(int(str))
